RESUMO
Objective:To assess the clinical value of helium-free magnetocardiography(MCG) in the diagnosis of coronary artery disease(CAD).Methods:A total of 213 patients with suspected CAD undergoing MCG in Beijing Anzhen Hospital were enrolled in the study. All patients underwent coronary CT angiography/invasive coronary angiography(CCTA/ICA) within 48 hours after MCG scanning. The parameters of MCG, including magnetic field multipolarization, magnetic field unipolarization, T-wave flattened, change in magnetic field distribution at TT segment, abnormal T-peak amplitude ration of maximum to minimum, significant movement of poles, magnetic field angle deviation and abnormal distribution of positive pole were used for the evaluation of the stenosis of coronary arteries.Results:Among 213 patients, MCG scanning was completed in 193 cases(90.6%), while 20 cases were excluded for various reasons. The CCTA/ICA results were taken as gold standard, the total coincidence rate of MCG with the degree of stenosis was 88.60%(95% CI: 83.25%-92.72%), the sensitivity and specificity of MCG in the diagnosis of CAD was 89.63%(95% CI: 83.21%-94.21%) and 88.23%(95% CI:78.12%-94.78%), respectively; the positive and negative predictive value were 93.80%(95% CI:88.72%-96.68%) and 81.08%(95% CI:72.15%-87.64%), respectively. Conclusion:MCG is highly accurate in the diagnosis of CAD, it may be widely used clinically as an non-invasive method free of radiation or contrast agent.
RESUMO
Objective To evaluate the clinical efficacy of the application of auricular composite tissue flap in treatment of nasal alar de-fect. Methods 43 cases of nasal defects patients were admitted to our hospital from January 2008 to March 2013, 23 cases of them were treated with auricular composite tissue flap transplantation, and the other 20 cases were given nasolabial sulcus flap transfer operation. All patients were followed-up for 6 to 12 months, and the rate of secondary surgery, proliferation of scar, and flap survival of the two groups were compared. Results Treatment of auricular composite tissue flap transplantation has more advantages in terms of the rate of secondary surgery, proliferation of scar, and flap survival, and the difference is of statistical significance (P<0. 05). And there is no obvious differ-ence in satisfaction degree of cosmetic outcomes. Conclusion Auricular composite tissue flap surgery has the advantages of simple opera-tion, good appearance and good efficacy.